Effect of Rice Straw Application on the Tillering of Paddy Rice

볏짚의 시용(施用)이 수도(水稻)의 분벽(分蘖)에 미치는 영향(影響)

This study was to observe the effect of rice straw application on the tillering of paddy rice with the varying treatments in which the amount of straw, nitrogen, applying location of rice straw and drainage were involved. The results obtained from the experiments were as follow; 1. The increased application of rice straw not only retarded the tillering of plant, but delayed the maximum tillering and heading stage. It also reduced the maturing rate. 2. The retardment of early tillering caused by the application of rice straw was not recovered by increasing nitrogen. Similarly the maximum tillering and heading stage were not influenced by the increased nitrogen application. 3. Drainage and deep application of rice straw had significant effects on reducing the retardment of early tillering. 4. Rice straw application markedly increased organic matter and potassium contents in the soil.

볏짚 시용량(施用量) 차이(差異)가 수도분벽(水稻分蘗)에 미치는 영향(影響)을 알아보기 위(爲)하여 볏짚 시용량(施用量), 질소량(窒素量), 시용위치(施用位置) 및 배수(排水) 등(等)을 달리하여 시험(試驗)한 결과(結果)는 다음과 같다. 1. 볏짚 시용량(施用量) 증가(增加)는 초기분벽(初期分蘗)을 억제(抑制)하며, 최고분벽기출수기(最高分蘗期出穗期)를 지연(遲延)시키고 등숙율을 저하(低下)시켰다. 2. 볏짚 시용(施用)에 의(依)한 초기분벽기(初期分蘗期) 및 출수기(出穗期) 지연(遲延)을 단축(短縮)시켜 주지 못하였다. 3. 초기분벽(初期分蘗) 억제(抑制) 방지(防止)로서는 배수(排水)와 심층(深層) 시용(施用)이 효과적(效果的)이였다. 4. 볏짚 시용(施用)으로 토양(土壤)의 유기물(有機物) 및 칼륨의 증가(增加)가 현저(顯著)하였다.